import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/login'
import Home from '../components/home'
import Welcome from '../components/welcome'
import Users from '../components/user/Users'
import Rights from '../components/power/Rights'
import Roles from '../components/power/Roles'

Vue.use(VueRouter)

  const routes = [
    {
      path:'/login',
      component:Login
    },
    {
      path:'/',
      redirect:'/login'
    },
    {
      path:'/home',
      component:Home,
      redirect:'/welcome',
      children:[
        {
          path:'/welcome',
          component:Welcome
        },
        {
          path:'/users',
          component:Users
        },
        {
          path:'/rights',
          component:Rights
        },
        {
          path:'/roles',
          component:Roles
        }
      ]
    }
]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to,from,next) => {
  // to：将要访问的路径
  // from：从哪个路径跳转而来
  // next：是一个函数，表示放行

  if(to.path == '/login') return next();
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next();
})

export default router
